In addition to the [1]Arm and RISC-V SoC changes and new platforms/machines added for the Linux 6.18 kernel, the separate Device Tree pull request was merged for this next kernel version that also now adds the strings for the upcoming Arm C1 Nano, Pro, Platinum, and Ultra processor cores.

Last month Arm [2]announced the Lumex CSS Plaform with the C1 CPUs . The Arm C1 Nano / Pro / Premium / Ultra branding will eventually replace Cortex-A and Cortex-X branding moving forward.

The Device Tree changes for Linux 6.18 add the new Arm CPU YAML strings of arm,c1-nano, arm,c1-premium, arm,c1-pro, and arm,c1-ultra strings for use by future Device Tree files.

The DT pull also adds the Qualcomm Snapdragon X2 Elite "Glymur" interrupt controller binding, adding samsung,exynos8890-mali GPU to Arm Mali Midgard, and other updates. See [3]this pull for all the Device Tree changes merged for Linux 6.18.



[1] https://www.phoronix.com/news/Linux-6.18-SoC-DT-Changes

[2] https://www.phoronix.com/news/Arm-Lumex-Platform-C1

[3] https://lore.kernel.org/lkml/20250929181601.GA345627-robh@kernel.org/